单项选择题

Why are scientists surprised by the findings in their noise study

A．Because the world is becoming more and more noisy.
B．Because they have learned that noise is also a kind of pollution.
C．Because noise is an unwanted waste for human beings.
D．Because people knew little about noise before.
<上一题 目录 下一题>
热门 试题

单项选择题
From the last sentence of the passage we can learn that ______
A．we can put noise under control if we take effective measures
B．sometimes we have to shout loudly so that others can hear us
C．shouting is the chief cause of noise pollution nowadays
D．it is important to warn people of the danger of noise pollution
单项选择题
When the writer says we cannot return to the good old days, he means that ______
A．our society is becoming much worse than before
B．in our modern society it is hard to lead a quiet life
C．the old days were much happier than the present time
D．it is impossible for us to deal with noise as we did before
相关试题